protected function setMockAssetsService($file)
{
$mockAssetsService = $this->getMockBuilder('Craft\\AssetsService')->disableOriginalConstructor()->getMock();
$asset = $this->getMockAssetFileModel($file);
$mockAssetsService->expects($this->any())->method('getFileById')->willReturn($asset);
$this->setComponent(craft(), 'assets', $mockAssetsService);
}